JPS61109235U - - Google Patents
Info
- Publication number
- JPS61109235U JPS61109235U JP19456684U JP19456684U JPS61109235U JP S61109235 U JPS61109235 U JP S61109235U JP 19456684 U JP19456684 U JP 19456684U JP 19456684 U JP19456684 U JP 19456684U JP S61109235 U JPS61109235 U JP S61109235U
- Authority
- JP
- Japan
- Prior art keywords
- emitting diode
- light
- light emitting
- receiver
- emitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Electronic Switches (AREA)
Description
第１図は本案反射形光電スイツチのブロツクダ
イアグラム、第２図はその表示回路の一例を具体
的に示す発光ダイオード・ドライバ回路の回路図
、第３図はその動作時の各部の波形状態を示すタ
イミングチヤート図、又、第４図は動作表示用発
光ダイオードの接続方法を変更した場合の上記表
示回路の応用例である。
尚、図中Ａ……投・受光器、Ｂ……アンプユニ
ツト、１……増幅回路、２……同期アンプ、３…
…整流回路、４……波形整形回路、５……出力回
路、６……表示回路、７……発振回路、８……電
源回路、９……検出物、Ｌ１……投光用発光ダイ
オード、Ｌ２……動作表示用発光ダイオード、Ｐ
……受光用フオトトランジスタ。
Fig. 1 is a block diagram of the reflective photoelectric switch according to the invention, Fig. 2 is a circuit diagram of a light emitting diode driver circuit showing an example of its display circuit, and Fig. 3 shows the waveform state of each part during operation. The timing chart and FIG. 4 show an application example of the above display circuit when the connection method of the light emitting diode for operation display is changed. In the figure, A... emitter/receiver, B... amplifier unit, 1... amplifier circuit, 2... synchronous amplifier, 3...
... Rectifier circuit, 4 ... Waveform shaping circuit, 5 ... Output circuit, 6 ... Display circuit, 7 ... Oscillation circuit, 8 ... Power supply circuit, 9 ... Detection object, L1 ... Light emitting diode for light projection, L2... Light emitting diode for operation display, P
...Phototransistor for light reception.
Claims (1)
をケーブルで接続してなるアンプ分離形の反射型
光電スイツチにおいて、動作表示用発光ダイオー
ドＬ２を投・受光器の投光用発光ダイオードＬ１
のカソード側とＯＶ線との間に順方向に接続する
一方、アンプユニツトの発光ダイオード・ドライ
バ回路として、発振回路の信号により上記投光用
発光ダイオードＬ１を点滅させるとともに、上記
発振信号とアンプユニツト出力信号とを判別し、
検出物が通過していない場合は投・受光器への電
流を経時的に逆転させて上記２つの発光ダイオー
ドを交互に点滅させ、検出物が通過したときは投
光用発光ダイオードＬ１だけを点滅させるように
構成したことを特徴とする光電スイツチ。 In a reflection type photoelectric switch with an amplifier separated type, in which a separate emitter/receiver and an amplifier unit are connected by a cable, a light emitting diode L2 for operation display is connected to a light emitting diode L1 for emitting light from the emitter/receiver.
The light-emitting diode L1 is connected in the forward direction between the cathode side of the amplifier unit and the OV line, and serves as a light-emitting diode driver circuit for the amplifier unit. Distinguish between the output signal and
If the object to be detected has not passed, the current to the emitter and receiver is reversed over time to make the above two light emitting diodes blink alternately, and when the object to be detected has passed, only the light emitting diode L1 for light emission blinks. A photoelectric switch characterized in that it is configured to
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984194566U JPH0430827Y2 (en) | 1984-12-21 | 1984-12-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984194566U JPH0430827Y2 (en) | 1984-12-21 | 1984-12-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61109235U true JPS61109235U (en) | 1986-07-10 |
| JPH0430827Y2 JPH0430827Y2 (en) | 1992-07-24 |
Family
ID=30752019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984194566U Expired JPH0430827Y2 (en) | 1984-12-21 | 1984-12-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0430827Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS577631A (en) * | 1980-06-16 | 1982-01-14 | Omron Tateisi Electronics Co | Photoelectric switch |
-
1984
- 1984-12-21 JP JP1984194566U patent/JPH0430827Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS577631A (en) * | 1980-06-16 | 1982-01-14 | Omron Tateisi Electronics Co | Photoelectric switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0430827Y2 (en) | 1992-07-24 |